Brew Ratio and Yield

Summary:: Brew ratio defines how much coffee is used relative to water; yield describes how much ends up in the cup and how much was extracted.

• Brew ratio:
• Defined as coffee mass : water mass (or beverage mass).
• Example guidelines:
  • Espresso: commonly around 1:2 (e.g., 18 g in → 36 g out).
  • Filter: commonly around 1:15–1:17 (e.g., 15 g in → 255 g water).
• Extraction yield:
• Approximate target range for many brews: 18–22% of the coffee mass dissolved.
• Used mainly as a tool, not a strict rule; taste is the final arbiter.

See also:: Brewing Variables, ../Extraction Process